package cn.mcsys.viewer.core.utils;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Service;

@Service
public class BeanUtil implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    static {
        if(applicationContext==null) {
            applicationContext = new ClassPathXmlApplicationContext("spring-mvc-viewer.xml");
            System.out.println("读取文件获取applicationContext成功");
        }else {
            System.out.println("获取当前applicationContext成功");
        }
    }

    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }
}
